炭气凝胶负极材料的制备及研究  

Preparation and research of carbon aerogel as anode material

作　　者：解德滨[1] 沈军[1] 吴广明[1] 周斌[1] 韩伟娜[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《电池》2006年第4期302-304,共3页Battery Bimonthly

基　　金：国家自然科学基金项目(20133040;50572073);上海市纳米专项(0216nm035;0452nm088);上海市重点学科建设项目;上海科技启明星跟踪计划项目资助(05QMH1413)

摘　　要：以间苯二酚和甲醛为原料,通过溶胶-凝胶方法制备有机气凝胶,再在不同温度下炭化,得到具有三维孔洞结构的炭气凝胶。用XRD和SEM研究了炭气凝胶的晶态和微观形貌,用恒流充放电测试了炭气凝胶电极的电化学性能。较低炭化温度(750℃)下制备的样品具有较高的可逆容量(500 mAh/g以上)。从第3次循环起,库仑效率保持在95%以上。The organic aerogel was prepared by sol-gel method, with resorcinol and formaldehyde as raw materials. The carbon aerogel with three-dimensional space structure was prepared by charring the organic aerogel at different temperatures. The crystalline state and microstructure of the carbon aerogel were tested by XRD and SEM. The electrochemical performance of the carbon aerogel electrode was studied by constant current charge-discharge test. The sample charring at lower temperature（750℃ ） had higher reversible capacity （above 500 mAh/g）. The coulomb efficiency was above 95% starting from the third cycle.

关 键 词：锂离子电池 负极 炭气凝胶 溶胶-凝胶法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]